* {
    margin: 0;
    padding: 0;
}

ul,
ol,
li {
    list-style: none;
}

img {
    vertical-align: top;
}

a {
    text-decoration: none;
}

body {
    background-color: #999;
    font-family: Helvetica Neue, Helvetica, PingFang SC, Tahoma, Arial, sans-serif;
}

.navs {
    background-color: #100903;
    width: 850px;
    height: 60px;
    margin: 0 auto;
}

.navs>ul>li {
    float: left;
    margin: 0 20px;
}

.clearfix::after {
    content: '';
    display: block;
    clear: both;
}

.navs>ul>li>a {
    display: block;
    height: 60px;
    text-align: center;
    line-height: 60px;
    font-size: 14px;
    padding: 0 20px;
    color: rgba(255, 255, 255, .7);
}

.navs>ul>li:nth-child(5) {
    position: relative;
}

.component {
    position: absolute;
    top: 70px;
    left: -40px;
    display: none;
    background-color: #fff;
    border-radius: 2px;
    padding: 10px 0;
}

.component>li>a {
    display: block;
    width: 150px;
    height: 36px;
    text-align: center;
    line-height: 36px;
    color: #666;
    font-size: 14px;
}

.component>li>a:hover {
    background-color: #F6F6F6;
}

.navs>ul>li.around>span {
    position: absolute;
    top: 24px;
    right: 5px;
    display: block;
    width: 7px;
    height: 7px;
    border-top: 1px solid rgba(255, 255, 255, .7);
    border-right: 1px solid rgba(255, 255, 255, .7);
    transform: rotate(135deg);
    /* 过渡写到本身上，谁做动画给谁加 */
    transition: all 0.3s;
}

.navs>ul>li.around:hover>span {
    top: 29px;
    transform: rotate(315deg);
}

.navs>ul {
    position: relative;
}

.navs>ul>p.bar {
    position: absolute;
    left: 0;
    bottom: 0;
    height: 5px;
    /* display: none; */
    background-color: #5FB878;
}